Your problem will be with curling irons and hairdryers. These non-electronic devices do not have the advantage of auto-sensing power supplies like the AC to DC on laptops, cell phones, etc. You truly need to change the voltage and ac frequency. Also, they require high power, much more than the usual 60 watts for charging ipods, etc. You can get voltage converters for this at around $50 at radio shack.

Anything with an auto-sensing 110-240 power supply simply requires a plug adapter. Tiny, easy to carry, no worries.